When I double my number, add four and then subtract and subtract three I get my number plus one . What is my number ?
Mathematics · Middle School · Tue Nov 03 2020
Answered on
Given the statement:
I double my number, add four and then subtract three I get my number plus one
Determine the number.
Solution:
The given equation can be written as,
2x + 4 -3 = x + 1
In order to solve for x, we move x and 4 -3 on their opposite side of the equation, hence we must take note that when moving a number, the sign chagnges.
2x - x = -4 + 3 +1
2x = 0
x = 0
Check:
2(0) + 4 - 3 = 0 + 1
1=1
Final answer:
x = 0